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Finding the Fourth Proportional to 145,993.73, 218,990.79 and 40,812.66

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Solution

The fourth proportional to 145,993.73, 218,990.79 and 40,812.66 is: 61,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,993.73 : 218,990.79 = 40,812.66 : x
  2. Step 2: Convert to fraction form
    145,993.73/218,990.79 = 40,812.66/x
  3. Step 3: Cross multiply
    145,993.73x = 218,990.79 × 40,812.66
  4. Step 4: Simplify right side
    145,993.73x = 8,937,596,655.40
  5. Step 5: Solve for x
    x = 8,937,596,655.40/145,993.73
  6. Step 6: Final answer
    x = 61,219.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.